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{"type":"item.completed","item":{"id":"item_1","type":"agent_message","text":"```python\nimport json,shutil\nshutil.copyfile(\"/work/design.py\",\"/work/design_v12.py\")\ns=open(\"/work/design.py\").read()\nidx=s.index('# Tengen is a useful universal first move')\nextra=r'''\n# Corner/edge snapback and cyclic-capture guard.\n# A singleton capture is dangerous if the resulting string has no\n# other empty neighbour and no connection to a healthy friendly string.\ncorner_points=set()\nfor r0,c0,dr,dc in [(0,0,1,1),(0,8,1,-1),(8,0,-1,1),(8,8,-1,-1)]:\n    for a,b in [(0,0),(1,0),(0,1),(1,1),(2,0),(0,2)]:\n        corner_points.add((r0+dr*a)*9+c0+dc*b)\ncorner_points=sorted(corner_points)\nassert len(corner_points)==24\nslot={p:487+j for j,p in enumerate(corner_points)}\nfor p,u in slot.items():\n    W[4][unit(3,p),u]=1\n    for q in adj[p]:\n        W[4][unit(1,q),u]-=1\n\nfor p,u in slot.items():\n    B[5][u]=-4-4*len(adj[p])\n    W[5][unit(5,p),u]+=4\n    for q in adj[p]:\n        W[5][unit(0,q),u]+=4\n        W[5][unit(1,q),u]+=4\n        W[5][unit(3,q),u]-=2\n        if q in slot:\n            W[5][slot[q],u]+=3\n    OW[u,p]-=14\n\n'''\ns=s[:idx]+extra+s[idx:]\nopen(\"/work/design.py\",\"w\").write(s)\noverrides=json.load(open(\"/work/params_v9.json\"))\nexec(s)\nprint(\"Added local snapback/cyclic-capture guards in all four corners.\")\n```\n"}}
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